Muffler-whistle.



B. G. WHITFIELD.

MUFFLER WHISTLE. APPucATloN FILED FEB. 7. |911.

1,241,800. Patented oct. 2,1917.

` BALDWIN e. WHITFIELD, or CHICAGO, ILLINOIS.

MUFFLER-WHISTLE.

`Specification of Letters Patent.

Patented Oct. 2, 1917.

i Application filed February 7, 1917. Serial No. 147,149.

To all 'who/la t1/my concern Be it known that I, BALDWIN G. WHIT- FIELD, a citizen of the United States, resid- -ing at Chicago, in the county of Cook and .whistle The device also embodies a muffler,

and a means is provided for directing the exhaust gases either to the muffler or to the whistle.

In order that the invention may be better understood, reference is had to the accompanying drawing, forming a part of this specification.

In the drawing,

Figure 1 is a side elevation of the device;

Fig. 2 is a central longitudinal section thereof;

Fig. 3 is an inverted plan View, and

Fig. 4 is a cross section on the line 4-4 of Fig. 2.

Referring specifically to the drawing 5 denotes the muffler casing, proper, the same being of any suitable contour and having its ends provided with removable closures. At the bottom of the muffler casing, and formed integral therewith, is a series of whistle tubes 6 of different lengths so that each tube has a dierent pitch. The tubes extend in a straight row across the bottom of the muffler casing, and may be, and preferably are, arranged to sound a musical chord. The forward end of each tube has the usual opening or mouth 7.

Against the inlet end of the casing 5 is clamped a casing section 8 which is in communication with the interior of the casing 5 and extends down a sufficient distance below the bottom of the latter to extend across the mouths of the tubes 6. The section 8 has a top chamber 9 which is in line with the interior of the muffler casing to discharge thereinto and said section also has a bottom chamber 10 which is in line with the tubes 6 to discharge into the latter.A The chamber 9 has an inlet nipple 11 for connection to the exhaust pipe of the engine.

The rear end of the casing 5 is closed by a head 12 having an outlet 13 extending downwardly to discharge the exhaust down on the ground. The casing 5 is located between the parts 8 and 12, and these three parts are clamped together by long bolts 14 located on opposite sides of the device, and passing through lugs 15 on the parts 8 and l2, said bolts being secured by nuts 16. The device is therefore made up of only three parts of simple design, which can be easily assembled or taken apart. The structure is Vsimple and cheap, and the device can be readily opened up for cleaning. The device can also be readily applied without cutting the exhaust pipe of the engine.

In order to direct the exhaust either into the muffler easing 5 or to the whistle tubes 6, a switch valve is provided. This valve is a plate 17 pivotally mounted in the section 8, as shown at 18, and located to divide the same into the top and bottom chambers 9 and 10. The valve is in line with the bottom of the casing 5, and when down it cuts offthe chamber 10 from the chamber 9, a stop lug 19 holding the valve in this position. The valve may be swung upward to Iplace the chambers 9 and 10 in communication, and in this position the valve closes the forward end of the casing 5 and thus cuts off the same from the chamber 9. A stop lug 20 is provided for limiting the upward swing of the valve. In the first described position of the valve 17, (shown in full lines in Fig. 2) the exhaust entering through the inlet 11 passes through the chamber 9 and thence into the muffler casing 5 from which latter it escapes through the outlet 13. In the second described position of the valve, (shown dotted in Fig. 2,) the exhaust passes from the chamber 9 into chamber 10, and from the latter it passes to the whistle tubes 6 to sound the same. The sound produced by the whistles is steady and continuous, and not jerky and screechy, as the exhaust from all the engine cylinders is utilized.

The valve 17 will be provided with a suitable controlling device, which may be a crank arm 21 connected to the valve pivot and having an actuating rod 22 extending to the foot board of the machine.

I claim A muffler whistle comprising a muflier casing open at its ends and provided on one side with whistle tubes, an end casing section detaohably connected to one end of the Aen d, said head havingan exhaust outlet, and aforesaid casing and provided lwith a `chamas Wtoh Valve n ltlleaforesad end section 10l ber in communication With "the interior for alternately cuttng'olf its chamber from thereof, and also having an exhaust inlet, the ,interior of the muffler casing and from y said end section being also provided 'with a Vthe chamber which opens to the Whistle cha ber which opens to` the Whistle tubes, tubes.

-a bhead detachably connected to the other In testimony whereof I affix my signature. 15

end of the muffler casing and closingI said n BALDWIN G. WHITFIELD.

n Copies ofvthislpatevnt may'beiobtaned for .ve cents each, by addressing the fG-ommssioner of Patents,

" [WavshinsgftolnD'.l C. 

